Oliver or tilt-hammer.



J. VINCENT. OLIVER 0R TILT HAMMER. APPLICATION FILED APR. 4, I916.

Patented Aug. 14, 1917.

2 SHEETSS.HEI-IT I.

finvcvrrog JOE-4 WA/c: E/vr N E C N V OLIVER 0R TI LT HAMMER.APPLICATION FILED APR. 4. 1916.

JOEL. //vCEf 7* WITED $TATE PATENT UFFIQE,

JOEL VINCENT, OF ROCK MEMBURY, ENGLAND, ASSIGNOR OF ONE-HALF T JAMESVINCENT, OF EASTBOURNE, ENGLAND.

Specification of Letters Patent.

OLIVER OR TILT-HAMMER.

Patented Aug. 11, 1917.

Application filed April 4, 1916. Serial No. 88,912.

To all whom it may concern:

Be it known that I JOEL VINCENT, a subject of the King of Great Britainand Ireland, and resident of Rock Membury, county of Devon, England,have invented certain new and useful Improvements in and Relating toPower-Driven Olivers or Tilt-Hammers, of which the following is aspecification.

This invention, relates to power, beltdriven olivers or tilt hammers,and has for its especial objects to obtain by the hereinafter describedconstruction and arrange ment of apparatus (1) Light or heavy blows atthe will of the operator with a free and draw ng action, the blow beingeffected by the combined weight of the hammer head and helve andtheaction of a spring; (2) the automatic return of the hammer to its openor ready to work position under the action of a spring; (3) the novelarrangement and form of wiper and its automatic disengagevment from thehammer; l) the provision of means which enable the anvil to be shiftedon the anvil block from end to end and from front to back to enable thework to be brought to the most advantageous position; (5) effecting theentire control, starting light or heavy blows by a light pressure of apedal lever.

The invention is illustrated by the accompanying sheets of drawings, inwhich Figure 1 is an end view partly in section;

Fig. 2 is a front elevation, anvil block partly in section.

Like letters of reference indicate corresponding parts in said figures.

In the drawings, a is the main frame and 40 a are bearings in which aremounted the ends of the rock shaft a? towhich is secured in any suitablemanner the carrier 6,

in which is secured the inner end of the helve b, and b is the hammerhead secured 45 to the outer end of said helve.

The underside of the carrier 2) is provided with a pair of jaws b andbetween said jaws is rotatably mounted the lifting wheel 6 and b is aspring fixed by one end to the 50 top of said carrier 1), while theother end bears against a rod 72 secured at its ends to the main framea, said spring I) tending to keep the hammer open ready for work.

Mounted in bearings c on the frame a is 55 the drive shaft 0, and 0 0are the fast and loose pulleys thereon, the shaft 0 between its bearingsbeing square, and on such square portion is slidably mounted the camwiper 0r lifter (Z which is tapered or graduated as shown.

6 is an upstanding arm or lever attached to one end of a rod 6, whichrod 6' extends to and through the anvil block f, and at its other end isprovided with the pedal lever 6 e is a tension spring connected to thearm 6 and the frame a, and e is the fork end of the arm 6, said fork ende engaging the collar cl on the wiper d.

g is a leaf spring bolted to the bridge piece 9 which is secured to theframe members a, said spring 9 having at its upper end a hole 9 throughwhich passes a rod 9 pivotally mounted between the jaws b of the helvecarrier 6, and g are nuts and washer on the free end of said rod g andbear, adjustably, against the spring g.

h is a frame slidably mounted on rods h mounted in lugs f on the uppersurface of the anvil block f, and f is the anvil slidably mounted onsaid frame it. i is a rack carried by hangers a" secured to theunderpart of the anvil 7, said rack z engaging with a toothed wheel 2'slidably mounted on a shaft 71 rotatably mounted in the anvil block f,said wheel 2' taking between cheeks i on the hangers 2" so that saidwheel may be moved along the shaft in accordance with the movement ofthe anvil f 2' is a ratchet or toothed wheel mounted on the shaft 2' andi is a pawl or click engaging therewith to lock and prevent the rotationof said shaft i and i is the squared end of said shaft to enable thesame to be-rotated by means of a suitable tool.

h are pins fixed to the frame it and engaging in slots j in the crankarms y" fixedly secured to the shaft 7' which is mounted in the anvilblock, and j are the operating handles or arms likewise fixedly securedto said shaft.

In working, on the rotation of the drive shaft 0 the cam wiper d engageswith and lifts through the medium of the lifting wheel 6 the hammerhelve b to a height in accordance with the position in which said camwiper d has been shifted to by the operator working the pedal lever 6This lifting movement of the helve Z) through the medium of the rod gpulls forward the spring 9 till such time as the cam Wiper (Z slips thelifting wheel 6 whereupon the hammer falls, striking a blowproportionate to the combined weight and fall "of the hammer and thepressure of the spring g. On the finish of the blow, the spring 6 on thehelve carrier 6 acting against the rod Z) lifts said carrier and itswheel clear of the cam wiper, which, under the action of the spring 0will at the same time be automatlcally shifted along the drive shaft 0so that said wiper in its continued rotation will pass clear of thelifting wheel 6* till such time as the operator depresses the pedallever 6 again, bringing the cam wiper to its original position to imparta blow of the same strength or to a position where said cam wiper willlift the lifting wheel to a higher or lower position to impart astronger or weaker blow.

In the event of a series of blows of the samestrength being required,the pedal lever is held down in its operative position by means of anysuitable arrangement'of catch, not shown in the drawings.

When the anvil f is required to be shifted endwise of the anvil blockfor from front to back of the same -or in both directions, the followingprocedure obta=ins Toshift the anvil f endwise, the pawl or click 2' isdisengaged from the toothed or ratchet wheel '71 and the shaft a thereofrotated, the toothed wheel a on said shaft by its engagement with therack z effecting the required movement of said anvil along the frame itmounted on the rods it carried by the lugs f on the anvil block To shiftthe anvil F from front to back of the anvil block f, the lever 7' isdepressed or raised according to direction required, said lever f by itsslotted cranks j and the pins W on the frame it shifting said frame italong the rods 71/, such movement being effected even while the hammeris working, the wheel "5 on the shaft 2' being shifted one Way or otheron said shaft by means of the checks i of the hangers i.

lf desired the lods it may take the form of screwed rods engaging in theframe it and be operated in any suitable manner to effect the movementof said frame it from front to back of the anvil block, and, if desired,the movement'of the anvil f on the anvil block f from front to backthereof may be effected by screwed rods in similar manner.

Having now described my Invention, What I-clann as new and desire tosecure by Let ters Patent of the United States is 1. A power drivenhammer of the class described comprising a mam frame, a drive shaftmounted in said frame, a lifting cam having a graduated striking'edgeand shiftable on said drive shaft, a rock shaft also mounted in theframe above the drive shaft,

a balanced he'lve carrier on said rock shaft,

a roller mounted on said carrier and located behind the lifting cam,andpedal actuated means for shifting said cam into and out of engagementwith said roller.

2. A power driven hammer of the class described comprising a main frame,a rotatable drive shaft mounted therein, a .rock shaft also mountedtherein, a' spring controlled helvecarrier fitted to said rock shaft, anactuating spring having one end fixed in the main frame, meansconnecting said helve carrier with the other end of'said spring,'ananvil block, a pedal lever exterior of said anvil block, a springcontrolled graduated cam wiper on the *drive shaft, and means connectingsaid pedal lever and cam wiper for shifting the latter along the driveshaft.

3. In a power driven hammer of the class described, the combination witha reciprocating hammer, of an anvil bloek,-means mounted in said blockfor controlling said hammer, an anvil carried by said block,'crank andlever means for 'shifting said anvil iaterally of the bloc and rack andpinion means for shifting'said anvil longitudinally thereof. g

4. In -a power driven hammer of theclass described, the combination witha reciprocating hammen'of an anvil block arranged at one side of saidhammer, a frame on the anvil blook slidable from end toend thereof,guide rods extending through said frame, outwardly extending pins alsoi011 said frame, a shaftextending fromfront to back-of said anvil block,slotted cran'ksand operating levers mounted on theends of said rods andengaging said outwardly extending pins, an anvil slidably mounted onsaid frame, a rack carried on the under 'side-ofsaid anvil, a shaftextending from one end *of the anvil block to the other and rotatablymounted therein-,a pinion slida bly mounted on said shaft and wheelfixed and and a pawl on said anvil block for engaging said "toothed"Wheel to lock said pinion shaft against rotation.

5. A power driven oliver or tilt hammer engaging said rack, 'a' toothedto the end-of said pinion shaft comprising a main frame, aro'tatabledrive shaft and a rock shaft mounted therein, a

spring-controlled graduated cam wiper slidably mounted on said driveshaft, a hel-ve carrier fixed to said rock shaft, a lifting wheelrotatably mounted in said helve carrier and-adapted to be engaged bysaid-cam wiper, a bridge piece carried "by the main frame, a springcarried by said bridge piece, a rod pivotally connected to the helvecarrier-and adjustahly connected to the spring on the bridge piece, andpedal-actuated means for shifting the graduated cam wiper along therotatable drive shaft.

6. A power driven oliver or tilt' 'hammer comprising a main frame, arotatable drive arranged exterior of the anvil block,

ii I OO shaft and a rock shaft mounted therein, a spring-controlledhelve carrier fixed to said rock shaft, an actuating spring carried by abridge piece fixed to the main frame, a bolt adjustably connecting saidactuating spring to said spring-controlled helve carrier, a graduatedcam Wiper shiftable on said drive shaft, a collar on said cam Wiper, aforked lever engaging said cam Wiper, a tension spring connected to saidforked lever and the main frame, a rock shaft carrying said Copies ofthis patent may be obtained for &

forked lever, an anvil block into and through which said rock shaftcarrying the forked lever extends and a pedal lever carried by theextending end of said rock shaft.

In testimony whereof I have aifixed my signature in presence of twoWitnesses.

JOEL VINCENT.

Witnesses:

R0131. HUNTER, BENJN THOS. KING.

five cents each, by addressing the Commissioner of Patents,

Washington. D. 0.

